Enhanced Bone Apposition to a Chemically Modified SLA Titanium Surface

Author:

Buser D.1234,Broggini N.1234,Wieland M.1234,Schenk R.K.1234,Denzer A.J.1234,Cochran D.L.1234,Hoffmann B.1234,Lussi A.1234,Steinemann S.G.1234

Affiliation:

1. Department of Oral Surgery and Stomatology, School of Dental Medicine, University of Berne, Freiburgstrasse 7, PO Box 64, 3010 Berne, Switzerland;

2. Institut Straumann AG, Waldenburg, Switzerland;

3. Department of Periodontics, University of Texas Health Science Center at San Antonio, San Antonio, USA; and

4. Division of Pediatric Dentistry and Structural Biology, Department of Operative Dentistry, School of Dental Medicine, University of Berne, Switzerland;

Abstract

Increased surface roughness of dental implants has demonstrated greater bone apposition; however, the effect of modifying surface chemistry remains unknown. In the present study, we evaluated bone apposition to a modified sandblasted/acid-etched (modSLA) titanium surface, as compared with a standard SLA surface, during early stages of bone regeneration. Experimental implants were placed in miniature pigs, creating 2 circular bone defects. Test and control implants had the same topography, but differed in surface chemistry. We created the test surface by submerging the implant in an isotonic NaCl solution following acid-etching to avoid contamination with molecules from the atmosphere. Test implants demonstrated a significantly greater mean percentage of bone-implant contact as compared with controls at 2 (49.30 vs. 29.42%; p = 0.017) and 4 wks (81.91 vs. 66.57%; p = 0.011) of healing. At 8 wks, similar results were observed. It is concluded that the modSLA surface promoted enhanced bone apposition during early stages of bone regeneration.

Publisher

SAGE Publications

Subject

General Dentistry

Reference15 articles.

1. Osseointegrated Titanium Implants:Requirements for Ensuring a Long-Lasting, Direct Bone-to-Implant Anchorage in Man

2. Wetting of textured surfaces

3. Bornstein MM, Lussi A, Schmid B, Belser UC, Buser D (2003). Early loading of titanium implants with a sandblasted and acid-etched (SLA) surface. 3-year results of a prospective study in partially edentulous patients. Int J Oral Maxillofac Implants 18:659–666.

4. Influence of surface characteristics on bone integration of titanium implants. A histomorphometric study in miniature pigs

5. Interface shear strength of titanium implants with a sandblasted and acid-etched surface: A biomechanical study in the maxilla of miniature pigs

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